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[SR-9707] Swift 5 compiler crash #52145

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groue opened this issue Jan 19, 2019 · 3 comments
Closed

[SR-9707] Swift 5 compiler crash #52145

groue opened this issue Jan 19, 2019 · 3 comments
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@rjmccall
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software regression swift 5.0

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@groue
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groue commented Jan 19, 2019

Previous ID SR-9707
Radar rdar://problem/47470420
Original Reporter @groue
Type Bug
Status Resolved
Resolution Done
Environment

Swift 5, macOS X, org.swift.5020190118a snapshot

Additional Detail from JIRA
Votes 4
Component/s Compiler
Labels Bug, 5.0Regression, CompilerCrash
Assignee @rjmccall
Priority Medium

md5: b4464f553b03693af154b9d7cf0d1774

Issue Description:

The following code has the Swift 5 compiler crash (snapshot org.swift.5020190118a):

protocol MutableFoo {
    mutating func foo()
    mutating func didFoo()
}

extension MutableFoo {
    mutating func foo() {
        performFoo()
    }
    
    mutating func performFoo() {
        didFoo()
    }
}

protocol Foo: MutableFoo {
    func foo()
    func didFoo()
}

extension Foo {
    func foo() {
        performFoo()
    }
    
    func performFoo() {
        didFoo()
    }
}
Assertion failed: (arg.hasLValueType() == param.isIndirectInOut()), function emit, file /Users/buildnode/jenkins/workspace/oss-swift-5.0-package-osx/swift/lib/SILGen/SILGenApply.cpp, line 2812.
Stack dump:
0.  Program arguments: /Library/Developer/Toolchains/swift-5.0-DEVELOPMENT-SNAPSHOT-2019-01-18-a.xctoolchain/usr/bin/swift -frontend -c -primary-file /Users/groue/Documents/git/groue/Swift5Crasher/Sources/Swift5Crasher/Swift5Crasher.swift -emit-module-path /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/Swift5Crasher.build/Swift5Crasher~partial.swiftmodule -emit-module-doc-path /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/Swift5Crasher.build/Swift5Crasher~partial.swiftdoc -emit-dependencies-path /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/Swift5Crasher.build/Swift5Crasher.d -emit-reference-dependencies-path /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/Swift5Crasher.build/Swift5Crasher.swiftdeps -target x86_64-apple-macosx10.10 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk -I /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -enable-testing -g -module-cache-path /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/ModuleCache -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -color-diagnostics -parse-as-library -module-name Swift5Crasher -o /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/Swift5Crasher.build/Swift5Crasher.swift.o -index-store-path /Users/groue/Documents/git/groue/Swift5Crasher/.build/x86_64-apple-macosx/debug/index/store -index-system-modules 
1.  While emitting SIL for 'performFoo()' (at /Users/groue/Documents/git/groue/Swift5Crasher/Sources/Swift5Crasher/Swift5Crasher.swift:26:5)
2.  While silgen emitFunction SIL function "@$s13Swift5Crasher3FooPAAE07performC0yyF".
 for 'performFoo()' (at /Users/groue/Documents/git/groue/Swift5Crasher/Sources/Swift5Crasher/Swift5Crasher.swift:26:5)
0  swift                    0x000000010f397808 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1  swift                    0x000000010f396a85 llvm::sys::RunSignalHandlers() + 85
2  swift                    0x000000010f397e12 SignalHandler(int) + 258
3  libsystem_platform.dylib 0x00007fff62effb3d _sigtramp + 29
4  swift                    0x00000001106afda0 cmark_strbuf__initbuf + 136003
5  libsystem_c.dylib        0x00007fff62dbd1c9 abort + 127
6  libsystem_c.dylib        0x00007fff62d85868 basename_r + 0
7  swift                    0x000000010c047886 (anonymous namespace)::ArgEmitter::emit(swift::Lowering::ArgumentSource&&, swift::Lowering::AbstractionPattern) + 4614
8  swift                    0x000000010c053030 (anonymous namespace)::CallSite::emit(swift::Lowering::SILGenFunction&, swift::Lowering::AbstractionPattern, swift::CanTypeWrapper<swift::SILFunctionType>, (anonymous namespace)::ParamLowering&, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, llvm::SmallVectorImpl<(anonymous namespace)::DelayedArgument>&, llvm::Optional<swift::ForeignErrorConvention> const&, swift::ImportAsMemberStatus) && + 976
9  swift                    0x000000010c05277c (anonymous namespace)::CallEmission::emitArgumentsForNormalApply(swift::CanTypeWrapper<swift::FunctionType>&, swift::Lowering::AbstractionPattern&, swift::CanTypeWrapper<swift::SILFunctionType>, llvm::Optional<swift::ForeignErrorConvention> const&, swift::ImportAsMemberStatus, llvm::SmallVectorImpl<swift::Lowering::ManagedValue>&, llvm::Optional<swift::SILLocation>&, swift::CanTypeWrapper<swift::FunctionType>&) + 1772
10 swift                    0x000000010c037496 (anonymous namespace)::CallEmission::apply(swift::Lowering::SGFContext) + 3094
ntext) + 2016
12 swift                    0x000000010c0a07c0 swift::ASTVisitor<(anonymous namespace)::RValueEmitter, swift::Lowering::RValue, void, void, void, void, void, swift::Lowering::SGFContext>::visit(swift::Expr*, swift::Lowering::SGFContext) + 80
13 swift                    0x000000010c09594e swift::Lowering::SILGenFunction::emitIgnoredExpr(swift::Expr*) + 1198
14 swift                    0x000000010c104e0c swift::ASTVisitor<(anonymous namespace)::StmtEmitter, void, void, void, void, void, void>::visit(swift::Stmt*) + 8668
15 swift                    0x000000010c102c25 swift::Lowering::SILGenFunction::emitStmt(swift::Stmt*) + 21
16 swift                    0x000000010c0b892a swift::Lowering::SILGenFunction::emitFunction(swift::FuncDecl*) + 426
17 swift                    0x000000010c02ebbd swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*)::$_1::operator()(swift::SILFunction*) const + 237
18 swift                    0x000000010c026322 swift::Lowering::SILGenModule::emitFunction(swift::FuncDecl*) + 642
19 swift                    0x000000010c110aae swift::ASTVisitor<SILGenExtension, void, void, void, void, void, void>::visit(swift::Decl*) + 110
20 swift                    0x000000010c10de9b SILGenExtension::emitExtension(swift::ExtensionDecl*) + 59
21 swift                    0x000000010c10de55 swift::Lowering::SILGenModule::visitExtensionDecl(swift::ExtensionDecl*) + 21
22 swift                    0x000000010c02b896 swift::Lowering::SILGenModule::emitSourceFile(swift::SourceFile*) + 822
23 swift                    0x000000010c02c7a6 swift::SILModule::constructSIL(swift::ModuleDecl*, swift::SILOptions&, swift::FileUnit*) + 294
24 swift                    0x000000010c02cd3c swift::performSILGeneration(swift::FileUnit&, swift::SILOptions&) + 44
25 swift                    0x000000010b7b1353 performCompile(swift::CompilerInstance&, swift::CompilerInvocation&, llvm::ArrayRef<char const*>, int&, swift::FrontendObserver*, swift::UnifiedStatsReporter*) + 7491
26 swift                    0x000000010b7ae57d swift::performFrontend(llvm::ArrayRef<char const*>, char const*, void*, swift::FrontendObserver*) + 3021
27 swift                    0x000000010b76049e main + 686
28 libdyld.dylib            0x00007fff62d14ed9 start + 1
29 libdyld.dylib            0x000000000000002a start + 2637082962
<unknown>:0: error: unable to execute command: Abort trap: 6
<unknown>:0: error: compile command failed due to signal 6 (use -v to see invocation)

This code does not crash the Swift 4 compiler.

It is the minimal code I could setup which prevents the GRDB library of the compatibility suite from successfully compile with Swift 5.

To reproduce, download https://github.com/groue/Swift5Crasher, and run the following command:

xcrun --toolchain org.swift.5020190118a swift build
@groue
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groue commented Jan 25, 2019

The bug is also present in Xcode 10.2 beta 1.

Github issue: groue/GRDB.swift#472

@rjmccall
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Reduction:

protocol MutableFoo {
    mutating func foo()
}

protocol Foo: MutableFoo {
    func foo()
}

extension Foo {
    func performFoo() {
        foo()
    }
}

@rjmccall
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#22238

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@AnthonyLatsis AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself crash Bug: A crash, i.e., an abnormal termination of software regression swift 5.0
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